Technology
Introduction:
Thuraya Satellite Communications uses
GEO satellites and provides blanket
coverage to more than 99 countries
spanning Europe, North and Central
Africa, the Middle
East, Central Asia and the Indian Subcontinent, nearly 40 per cent of the world’s
population. The system has been adapted for efficient operation in both satellite
and GSM environments and offers following telecommunications services: |
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Voice |
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Short Messaging |
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Fax |
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Data |
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System Approach:
Stratign has been designed and developed
on-line portable and Fixed Thuraya Monitoring System for strategic
application. Thuraya Monitoring System is designed and developed
as a 100% passive monitoring systems which are capable of
monitoring, deciphering and logging Thuraya communications
including Voice, SMS and Digital FAX.
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Portable
Thuraya monitoring:
The Portable Thuraya Monitoring System
is a tactical on-line Thuraya monitoring, decrypting and logging
solution capable of monitoring, deciphering and logging Thuraya
communications including Voice, SMS and Digital FAX.
The Portable Thuraya Monitoring System
is designed to monitor Thuraya communications on the L-Band
uplink and downlink channels, the system is completely passive
and does not interfere with the normal communications and hence
its presence cannot be detected. The ruggedized make and portability
of the system makes it ideal for quick strategic deployment.
The user friendly GUI and simple system configuration, significantly
reduces the training time required for the operator.
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Fixed Thuraya
Monitoring System:
The Fixed Thuraya
Monitoring System is designed and
developed as a 100% Passive Monitoring System which
is capable of monitoring, deciphering
and logging Thuraya communications
including Voice, SMS and Digital FAX. The Static Thuraya
Monitoring System is capable of providing
both side of the communication (full
duplex call), call related information along with the
location
of the Thuraya Phone by monitoring
of both L & C-band.
Since the power transmitted by the mobile handset on the
uplink is very less, it is often difficult to monitor it on
the L-Band, so the system monitors this information on the
C-band downlink (satellite to earth station) this overcomes
the distance limitation between the system and the target
while monitoring. The Surveillance of L-band (b/w Thuraya
satellite and Thuraya mobile) and C-band (b/w Thuraya Satellite
and Thuraya Gateway), provides total traffic monitoring of
the targeted spot beams.
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| System Features: |
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The System Monitors RF (L-band) Mobile to satellite. |
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Earth-to-space 1626.5-1660.5 MHz. |
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Space-to-Earth 1525.0-1559.0
MHz. |
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RF (C-band) Feeder Link. |
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Space-to-Earth 3400 to
4200MHz. |
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System monitors Voice, SMS, Fax (optional)
and Data (optional) communication. |
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System intercepts uplink information of Thuraya terminal
at C-band downlink (from the satellite
to gateway station) and downlink information of the Thuraya
terminal at L-band (from
satellite to Thuraya terminal). |
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System can be configured to monitor the C-band only when
L-band is not available. |
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The proposed system is capable to monitor a cluster of seven
spot beams simultaneously. However operator
can also intercepts the duplex calls from other nearby spot
beams by tuning the
system to the spot beam of their interest.
But this can not be guaranteed because of frequency reuse on
the Thuraya network
at L-Band. |
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Being a modular architecture, the capability of the system
in terms of number of calls can be increased
by adding extra hardware. |
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Coverage area of the system can be extended to another cluster
of 7 spot beams using portable Thuraya monitoring
system (optional) |
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The system can intercept calls, initiated from PSTN to MES,
MES to PSTN and Thuraya to Thuraya terminals. |
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Coverage area can be changed by the operator according to
priority of intelligence mission. |
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The system is capable of intercepting and displaying the
following information: |
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Latitude and
Longitude of target. |
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Telephone
number of called party. |
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Telephone number
of the calling party. |
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Direction of
the call flow (Incoming Call or Outgoing
call). |
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Call type (Voice
or SMS). |
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Duration of call
(With start time and end time). |
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All Thuraya communication in the coverage is intercepted. |
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The location of the target is mapped on Digital MAP. |
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Capability to intercept all communication from the targeted
spot beams in both uplink and downlink directions. |
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System automatically scans the available spot beams and
provides the spot beam ID, Latitude & Longitude of center
of the spot beam, Channel Number. |
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System automatically tunes the demodulator to desired spot
beam |
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System monitors both forward and reverse channels simultaneously |
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Modular architecture of the system allows further expansion
of the system |
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System maintains the internal call data record for each
communication with all identity parameters
that can be intercepted for each call. |
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System is capable of detecting new switching schema during
which new frequencies are allocated to
L-Band and C-Band mapping. The system has unique capabilities
to detect these new frequencies
in a very short time. |
